 /*******************************************************************************
  * Copyright (c) 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.text.undo;


 /**
  * This interface is used to listen to notifications from a DocumentUndoManager.
  * The supplied DocumentUndoEvent describes the particular notification.
  * <p>
  * Document undo listeners must be prepared to receive notifications from a
  * background thread. Any UI access occurring inside the implementation must be
  * properly synchronized using the techniques specified by the client's widget
  * library.</p>
  * <p>
  * Clients may implement this interface.
  * </p>
  *
  * @since 3.2
  */
 public interface IDocumentUndoListener {
     
     /**
      * The document is involved in an undo-related change. Notify listeners
      * with an event describing the change.
      *
      * @param event the document undo event that describes the particular notification
      */
     void documentUndoNotification(DocumentUndoEvent event);

 }

